Zombie Warrior Man

He was a good soldier when he was alive. He first thought that it was the end for him when he got shot. But, the next morning, he found himself inside a doctor, being experimented on by some mad doctors. He manages to escape and bow revenge to them. Now, he walks the earth as a dead man, a zombie.
Enough with this zombie craft that you cannot die because in this game, you would certainly die a second time if you are not going to be quick. Well, you do not have to worry about anything at first since there won't be anyone to challenge you. However, as you move on, you would find some people brave enough to fight against you.